52N Clients @ GeoViQua
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52N Clients @ GeoViQua Based on: “FOSS4G 2010 - SWE Tutorial” by Simon Jirka “Web-based Uncertainty Visualisation” by Lydia Gerharz, Edzer Pebesma, Christian Autermann, Hansi Senaratne, Christoph Stasch Daniel Nüst @ 2 nd PTB Reading, December 2011. OX-Framework.

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52N Clients @ GeoViQuaBased on:“FOSS4G 2010 - SWE Tutorial” by Simon Jirka“Web-based Uncertainty Visualisation” by Lydia Gerharz, Edzer Pebesma, Christian Autermann, Hansi Senaratne, Christoph StaschDaniel Nüst @ 2nd PTB Reading, December 2011


OX-Framework

  • OGC Web Service Access Framework

    • addresses developers

    • customizable and extendable system of cooperating classes

    • reusable design

    • applicable for client & server applications


Example clients
Example Clients

  • Rich Client

  • Web Map Server

  • Thin SOS Client, Thin SWE Client

  • uDig Plugin

  • ArcGIS Plugin



Oxf web map server
OXF Web Map Server

  • WMS-Frontend encapsulating a SOS

  • Conforms to WMS 1.1.1

  • Mapping of sensor data sets to layers

  • Existing WMS clients can access sensor data

  • Opaque Service Chaining

  • “Rendering Engine


Thin swe client
Thin SWE Client

Web-based application to access sensor data

Display of time series

Combination of different phenomena

Ajax based

Export: PDF, Excel and CSV

Supports SOS, SES




Sos gis plugins
SOS GIS Plugins

  • uDig

  • ArcGIS

  • R


Uncertainty visualisation in uncertweb
Uncertainty Visualisation in UncertWeb

  • Necessaryformodelinputs, outputsand intermediate steps

  • Support understandingandcommunicationofuncertainties

  • Support UncertWeb encodings (NetCDF-U, O&M, UncertML)

  • Aim: Develop a web-basedinteractivethinclient


Requirements
Requirements

  • Support for

    • Spatial & non-spatial data

    • Continuous & categorical data

    • Multivariate data

    • Time series

    • Summary statistics

    • Inputs, outputs, intermediate results

    • Different users


Prototype
Prototype

  • Client

    • OpenLayers

    • Java Script

    • Interactive

  • Processing service

    • For raster visualisation

  • Supports currently:

    • Continuous data

    • Raster & Vector representation




Architecture
Architecture

OpenLayers

client

SOS

Raster

map

O&M or JSON

WMS

reference

VECTOR DATA

WMS

Stores createdraster

VISS

Createsvisualisation

Add layer

NetCDF

WCS

Stores sourcedata

RASTER DATA


Test it
Test it!

  • http://giv-uw.uni-muenster.de/openlayers/?json=json/gaussian.json#

  • http://giv-uw.uni-muenster.de/openlayers/?oc=xml/observation.xml#

  • http://giv-uw.uni-muenster.de/vis/?netcdf=http://giv-uw.uni-muenster.de/vis/raster/biotemp.nc#


Usability survey
Usability Survey

  • Web basedsurvey (usingLimeSurvey)

    • Different usergroups

      • GIS andstatisticsexperts vs. non-experts

    • Questions on fivemethods

      • 3 static (adjacentmaps, contours, symbols)

      • 2 interactive (UncertWeb client, Aguila)

    • Evaluatingperformanceandpreference

      • Methodswith high performance + high preferencewereconsideredasuseful

  • http://surveys.ifgi.de/index.php?sid=47734&newtest=Y&lang=en



Survey output
Survey Output

  • http://geoviqua.dev.52north.org/UVS/


Summary
Summary

  • Components are there

  • License model is up for discussion!

  • UncertWeb client has high potential


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